Remote retrograde transaortic RF ablation of left-sided accessory pathways using a magnetic navigation system is feasible and safe, with acute success rates of 80% for Celsius RMT and 60% for Helios II.
Observational (n=20)
Is remote retrograde transaortic RF ablation using a magnetic navigation system feasible and safe for left-sided accessory pathways?
Remote retrograde transaortic RF ablation of left-sided accessory pathways using magnetic navigation is feasible, safe, and reduces physician fluoroscopy exposure, though it has a steep learning curve.
Tasa de eventos absoluta: 80% vs 60%
INTRODUCTION: A novel magnetic navigation system allows remote guidance of floppy radiofrequency (RF) ablation catheters. We evaluated the feasibility of mapping and ablation of left-sided accessory pathways (APs) using the retrograde transaortic approach with this system. This might open the gate to retrograde ablation of left atrial arrhythmias. METHODS AND RESULTS: Twenty consecutive patients were included. A Helios II was used in five and in 15 a Celsius RMT RF catheter with higher magnetic mass and different flexibility was used. Mapping and ablation were attempted. The learning curve was analyzed. Ablation was acutely successful in 60% of the patients using the Helios II and in 80% using the Celsius RMT. Median procedure time was 158 minutes, with median patient and physician fluoroscopy times of 26 and 4 minutes. In the last 10 patients, procedure times became significantly shorter (median 122 minutes, only Celsius RMT catheters) and standard catheters had to be used only twice. No complications occurred. CONCLUSIONS: Remote retrograde transaortic RF ablation of left-sided APs is feasible, safe, and reduces the physician's fluoroscopy exposure. There is a very steep initial learning curve, with the success rate increasing from 50% in the first 10 cases to 80% in the last 10 cases. Different catheter configurations may influence the outcome.
Thornton et al. (Tue,) conducted a observational in Left-sided accessory pathways (n=20). Remote retrograde transaortic RF ablation using a magnetic navigation system vs. Helios II vs Celsius RMT catheters was evaluated on Acute ablation success. Remote retrograde transaortic RF ablation of left-sided accessory pathways using a magnetic navigation system is feasible and safe, with acute success rates of 80% for Celsius RMT and 60% for Helios II.